month = int(input('请输入月份：'))

if  month < 1 or month > 12:
    print('非法输入')
elif  month <= 2 or month == 12:
    print('冬季')
elif month <= 5:
    print('春季')
    
elif month <= 8:
    print('夏季')
else:
    print('秋季')

# if  3 <= month == 4 <= 5:
#     print('春季')
# elif  6 <= month <= 8:
#     print('夏季')
# elif 9 <= month <= 11:
#     print('秋季')
# elif month == 12 or 1 <= month <= 2:
#     print('冬季')
# else:
#     print('非法输入')
    

# if month == 3 or month == 4 or month == 5:
#     print('春季')
# elif month == 6 or month == 7 or month == 8:
#     print('夏季')
# elif month == 9 or month == 10 or month == 11:
#     print('秋季')
# elif month == 12 or month == 1 or month == 2:
#     print('冬季')
# else:
#     print('非法输入')